Probing the nonunitarity of the leptonic mixing matrix at the CEPC

Antusch, Stefan; Fischer, Oliver

doi:10.1142/s0217751x16440061

Cited by 21 publications

(9 citation statements)

References 20 publications

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“…In ref. [3,12,53,54] it was shown that the FCC-ee and the CEPC are sensitive to sterile neutrino masses up to about 60 and 40 TeV, respectively, via the combination |θ e | 2 + |θ µ | 2 , using eq. (3) for neutrino Yukawa couplings O(1).…”

Section: Indirect Searches Via Electroweak Precision Observablesmentioning

confidence: 99%

Sterile neutrino searches at future e−e+, pp and e−p colliders

Antusch

Cazzato

Fischer

2017

Int. J. Mod. Phys. A

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212

251

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Sterile neutrinos are among the most attractive extensions of the SM to generate the light neutrino masses observed in neutrino oscillation experiments. When the sterile neutrinos are subject to a protective symmetry, they can have masses around the electroweak scale and potentially large neutrino Yukawa couplings, which makes them testable at planned future particle colliders. We systematically discuss the production and decay channels at electron-positron, proton-proton and electron-proton colliders and provide a complete list of the leading order signatures for sterile neutrino searches. Among other things, we discuss several novel search channels, and present a first look at the possible sensitivities for the active-sterile mixings and the heavy neutrino masses. We compare the performance of the different collider types and discuss their complementarity.

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Section: Indirect Searches Via Electroweak Precision Observablesmentioning

confidence: 99%

Sterile neutrino searches at future e−e+, pp and e−p colliders

Antusch

Cazzato

Fischer

2017

Int. J. Mod. Phys. A

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212

251

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“…1 The elements of η αβ are constrained from the mass of the W boson, the Weinberg angle, muon decay rate, lepton-flavour-violating processes etc. at the level of 10 −3 to 0.05 [64][65][66][67][68]. The non-unitarity η modifies oscillation probabilities as a combination of the NSIs [65,69], and the size of the ε parameters induced by the non-unitarity effect corresponds in general to the order of η.…”

Section: Non-unitaritymentioning

confidence: 98%

Beyond Standard Neutrino Theory

Ota¹

2018

Proceedings of the 19th International Workshop on Neutrinos From Accelerators NUFACT2017 — PoS(NuFact2017)

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“…In the presence of , the mixing matrix N is not unitary [93][94][95][96]. Considering the mass eigenstates, the charged current interaction in the Standard Model is given by…”

Section: Model and The Production Modementioning

confidence: 99%

Probing right handed neutrinos at the LHeC and lepton colliders using fat jet signatures

Das¹,

Jana

Mandal

et al. 2019

Phys. Rev. D

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The inclusion of heavy neutral leptons (right-handed neutrinos) to the Standard Model (SM) particle content is one of the best motivated ways to account for the observed neutrino masses and flavor mixing.The modification of the charged and neutral currents from active-sterile mixing of the neutral leptons can provide novel signatures which can be tested at the future collider experiments. In this article, we explore the discovery prospect of a very heavy right handed neutrino to probe such extensions at the future collider experiments like Large Hadron electron Collider (LHeC) and linear collider. We consider the production of the heavy neutrino via the t and s-channel processes and its subsequent decays into the semi-leptonic final states. We specifically focus on the scenario where the gauge boson produced from heavy neutrino decay is highly boosted, leading to a fat-jet. We study the bounds on the sterile neutrino properties from several past experiments and compare with our results.

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Probing the nonunitarity of the leptonic mixing matrix at the CEPC

Cited by 21 publications

References 20 publications

Sterile neutrino searches at future e−e+, pp and e−p colliders

Sterile neutrino searches at future e−e+, pp and e−p colliders

Beyond Standard Neutrino Theory

Probing right handed neutrinos at the LHeC and lepton colliders using fat jet signatures

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